Sorry to hear your news. I would be beside myself if either of my cats went missing. (They are house cats though). Any news?
If not, I would put posters around your local area and through everyones letter boxes. I would also ring all vets and RSPCA to see if you cat has been handed in - also give them a poster.
Good luck.
Bernie aka DDL

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Appreciate the little things in life because one day you will realise they are the big things